code: def get_data_shape(self):
      return self.data_shape
  
imports: import mxnet
  import numpy
  import sys, os
  import random
  import math
  import scipy.misc
  import cv2
  import logging
  import sklearn
  import datetime
  import img_helper
  from mxnet.io import DataIter
  from mxnet import ndarray
  from mxnet import io
  from mxnet import recordio
  from PIL import Image
  from config import config
  from skimage import transform
label_desc: Use image node_id 2 for calling the FaceSegIter obj's underlying member method code with example usage: obj.get_data_shape() and returns: self